{{Parts infobox
|image           = End caps.png
|designers       = [[User:Tim|Timothy Schmidt]]
|date            = 2021
|vitamins        = 
|materials       = 
|transformations = 
|lifecycles      = 
|tools           = [[3D printers]]
|parts           = 
|techniques      = 
|files           = 
|suppliers       = 
|git             = 
}}

[[Category:Parts]]
[[Category:Structure parts]]

=Introduction=
End caps fill the ends of frames, and round over sharp edges.

=Challenges=
Caps sometimes slip out from the ends of tubes in projects which experience a lot of forceful motion or vibration.  Same cap should fit both tube and extrusion.

=Approaches=
End caps add a small amount of length to each end of square tube frame.  This can be useful when accounting for the [https://en.wikipedia.org/wiki/Saw#Terminology kerf] of a saw used to cut frame to size.  Allowing capped frames to reach exact length despite the removal of some material with each cut.

End caps can contain useful information such as plastic type for recycling, color coding of frame length for easy identification, and branding or logos.

* [https://www.thingiverse.com/thing:2047317 End Cap for 1.5" 0.125" Square Tube] - [https://www.thingiverse.com/thing:1720245 End Cap generator]
* [https://8020.net/4611.html 8020.net extended tube insert]
* [https://www.grainger.com/product/29AU82 Square Tube End]
* [https://us.misumi-ec.com/vona2/mech/M1500000000/M1501000000/M1501080000/ Misumi: Frame end caps]

=Development targets=
* [https://www.thingiverse.com/thing:4804652 Adjustable square pipe cap]

=References=